chore(config): migrate OTTL transform to typed configuration

[webern]

Summary

Migrate the OTTL span transform processor to the typed traces configuration. The processor now receives typed error-mode and transform-statement values, and its raw configuration adapter is removed.

Change Type

• Non-functional (chore, refactoring, docs)

How did you test this PR?

• make fmt
• make check-docs
• make check-clippy
• make check-all
• OTTL transform tests: 24 passed
• cargo check -p agent-data-plane --tests

References

• Progresses Migrate saluki codebase to typed configuration. #2169
• Progresses Migrate APM traces to typed configuration. #2193

[webern]

• chore(config): migrate APM stats encoder to typed configuration #2266
• chore(config): migrate APM stats transform to typed config #2265
• chore(config): migrate OTTL transform to typed configuration #2263 👈 (View in Graphite)
• chore(config): migrate OTTL filter to typed configuration #2262
• chore(config): migrate trace obfuscation to typed configuration #2261
• chore(config): use typed OTLP traces configuration #2260
• chore(config): migrate trace sampler to typed configuration #2191
• chore(config): migrate datadog trace encoder to typed configuration #2187
• main

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[pr-commenter]

Binary Size Analysis (Agent Data Plane)

Baseline: 2ce0908 · Comparison: fff36a0 · diff
Analysis Configuration: stripped binaries · Pass/Fail Threshold: +5%
Sizes: 41.31 MiB (baseline) vs 41.39 MiB (comparison)
Size Change: +89.17 KiB (+0.21%)

✅ Binary size difference within threshold

Changes by Module

Module	File Size	Symbols
core	+75.82 KiB	1180
tokio	+32.86 KiB	412
saluki_common::resource_tracking::groups	+23.95 KiB	6
saluki_common::task::instrument	-22.59 KiB	7
hyper	-22.25 KiB	17
h2	+19.18 KiB	42
agent_data_plane::internal::remote_agent	-18.49 KiB	14
anon.71247e6768bc3ff5210891ad39f5ad3e.573.llvm.16394933846966769920	+17.62 KiB	1
anon.5267a291e5f08ab9d80458cdfc1a9218.14.llvm.16802303590854200399	-17.53 KiB	1
std	-17.52 KiB	47
prost	-13.72 KiB	17
serde_core	-13.53 KiB	119
anon.71247e6768bc3ff5210891ad39f5ad3e.686.llvm.16394933846966769920	+12.37 KiB	1
anon.1f80ce2ea163219c91306f97a3cc048a.579.llvm.14847804023011234010	-12.28 KiB	1
agent_data_plane_config::shared::_	-12.04 KiB	16
[sections]	+11.97 KiB	8
axum	-10.96 KiB	89
saluki_common::cache::CacheBuilder<K,V,W,H>	+10.77 KiB	1
agent_data_plane_config::domains::dogstatsd	+10.49 KiB	13
agent_data_plane_config::_::_<impl serde_core	+10.12 KiB	1

Detailed Symbol Changes

    FILE SIZE        VM SIZE    
 --------------  -------------- 
  +1.8%  +109Ki  +1.1% +48.4Ki    [5755 Others]
  [NEW] +33.0Ki  [NEW] +32.8Ki    agent_data_plane::internal::env::workload::RemoteAgentWorkloadProvider::from_configuration::_{{closure}}::hb9276a11f915d291
 +17e2% +26.8Ki +18e2% +26.8Ki    agent_data_plane::dogstatsd_contexts::artifact::for_each_record::ha4e06ef9d824f235
  [NEW] +17.6Ki  [NEW]     +76    anon.71247e6768bc3ff5210891ad39f5ad3e.573.llvm.16394933846966769920
  [NEW] +15.7Ki  [NEW] +15.5Ki    _<h2::client::Connection<T,B> as core::future::future::Future>::poll::h41a8072f644cb4e7
  [NEW] +15.6Ki  [NEW] +15.4Ki    _<core::future::poll_fn::PollFn<F> as core::future::future::Future>::poll::ha3f4d3cc5889e726
  +169% +15.2Ki  +171% +15.2Ki    agent_data_plane::state::metrics::rules::get_datadog_agent_remappings::hdf20e2a8dcc983e4
  [NEW] +14.2Ki  [NEW] +14.0Ki    _<h2::client::Connection<T,B> as core::future::future::Future>::poll::h4886d448713196ce
  [NEW] +12.4Ki  [NEW]     +81    anon.71247e6768bc3ff5210891ad39f5ad3e.686.llvm.16394933846966769920
   +84% +12.2Ki   +84% +12.2Ki    core::ptr::drop_in_place<agent_data_plane::cli::run::handle_run_command::{{closure}}>::h89ae9ab35e94ec3f
  [DEL] -12.3Ki  [DEL]     -81    anon.1f80ce2ea163219c91306f97a3cc048a.579.llvm.14847804023011234010
  [DEL] -12.5Ki  [DEL] -12.4Ki    agent_data_plane::dogstatsd_contexts::artifact::decode_records::h6f71107eea51d418
  [DEL] -12.7Ki  [DEL] -12.6Ki    agent_data_plane::dogstatsd_contexts::artifact::decode_records::h14dabe22dc89b463
  [DEL] -12.9Ki  [DEL] -12.8Ki    agent_data_plane::state::metrics::rules::dogstatsd::get_dogstatsd_remappings::ha71516d8223bc1b6
 -69.7% -14.7Ki -70.2% -14.7Ki    _<figment::value::de::ConfiguredValueDe<I> as serde_core::de::Deserializer>::deserialize_struct::h6c5e847551d5f92c
 -91.3% -15.2Ki -92.7% -15.2Ki    _<agent_data_plane::internal::remote_agent::RemoteAgentEventReporter as saluki_core::runtime::supervisor::Supervisable>::initialize::_{{closure}}::_{{closure}}::h6ee40e4c6349ee80
  [DEL] -17.5Ki  [DEL]     -76    anon.5267a291e5f08ab9d80458cdfc1a9218.14.llvm.16802303590854200399
  [DEL] -19.9Ki  [DEL] -19.8Ki    agent_data_plane::internal::env::ADPEnvironmentProvider::from_configuration::_{{closure}}::hbf519b844eb69f03
  [DEL] -20.8Ki  [DEL] -20.6Ki    agent_data_plane::internal::env::workload::build_collector::_{{closure}}::h11f056b0e952ff1d
 -74.9% -21.4Ki -75.3% -21.4Ki    _<figment::value::de::ConfiguredValueDe<I> as serde_core::de::Deserializer>::deserialize_struct::ha4ed5ea72e5ab5f4
 -77.8% -22.9Ki -78.2% -22.9Ki    _<figment::value::de::ConfiguredValueDe<I> as serde_core::de::Deserializer>::deserialize_struct::h58b266ff3a7eeafe
  +0.2% +89.2Ki  +0.1% +28.0Ki    TOTAL

[pr-commenter]

Regression Detector (Agent Data Plane)

Run ID: f188cb84-281e-4979-9990-153d1b23daac
Baseline: 2ce09089 · Comparison: fff36a04 · diff

Optimization Goals: ✅ No significant changes detected

Fine details of change detection per experiment (5)

Experiments configured erratic: true are tagged (ignored) and skipped when determining which experiments regressed or improved. Experiments which are detected as erratic at runtime are tagged (erratic) to flag that the run's sample dispersion was high, but their regression / improvement signal still counts.

experiment	goal	Δ mean %	links
quality_gates_rss_dsd_ultraheavy	memory	⚪ +0.37	metrics profiles logs
quality_gates_rss_dsd_low	memory	⚪ +0.35	metrics profiles logs
quality_gates_rss_dsd_heavy	memory	⚪ +0.32	metrics profiles logs
quality_gates_rss_idle	memory	⚪ -0.01	metrics profiles logs
quality_gates_rss_dsd_medium	memory	⚪ -0.18	metrics profiles logs

Bounds Checks: ❌ Failed (5)

experiment	check	replicates	observed	links
quality_gates_rss_dsd_heavy	memory_usage	10/10	✅ 225 MiB ≤ 250 MiB	metrics profiles logs
quality_gates_rss_dsd_low	memory_usage	10/10	✅ 51.1 MiB ≤ 60 MiB	metrics profiles logs
quality_gates_rss_dsd_medium	memory_usage	10/10	✅ 90.7 MiB ≤ 100 MiB	metrics profiles logs
quality_gates_rss_dsd_ultraheavy	memory_usage	9/10	❌ 445 MiB ≤ 420 MiB	metrics profiles logs
quality_gates_rss_idle	memory_usage	10/10	✅ 31.7 MiB ≤ 40 MiB	metrics profiles logs

Explanation

A change is flagged as a regression when |Δ mean %| > 5.00% in the regressing direction for its optimization goal AND SMP marks the experiment as a regression (is_regression: true). Improvements use the matching criteria for the improving direction. Experiments configured erratic: true (tagged (ignored)) are skipped outright; experiments detected as erratic at runtime (tagged (erratic)) still count, since that flag describes sample dispersion rather than directional certainty. The Δ mean % cell is colored accordingly: 🟢 = improvement, 🔴 = regression, ⚪ = neutral. Reduction in CPU or memory is an improvement; reduction in ingress throughput is a regression.

[datadog-prod-us1-5]

More details

The migration consistently routes OTTL transform settings through the typed traces configuration, whose loader tests cover defaults, valid modes, invalid modes, unknown fields, file translation, and environment transport. No diff-only behavioral regression was found; focused Rust execution could not start because the sandbox could not fetch the pinned git dependency.

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[lucastemb]

Ignore this: LGTM. Only thing is I believe we no longer deny_unknown_fields. If that's something we care about preserving, we would need to update the SalukiOnly::OttlTransformConfig to contain that. I just realized that this was addressed by the previous PR. I reviewed it from newest -> oldest. 😓

[datadog-prod-us1-5]

More details

Production-shaped OTTL filter and transform YAML preserved statement ordering, error modes, defaults, and malformed-input rejection through the typed configuration boundary.

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